Mercurial > sdl-ios-xcode
annotate src/power/windows/SDL_syspower.c @ 5192:6f6a9340fb93
Added a hint system to allow configuration hints to be specified by the application.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 05 Feb 2011 10:02:39 -0800 |
parents | 327f181542f1 |
children | b530ef003506 |
rev | line source |
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1 /* |
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2 SDL - Simple DirectMedia Layer |
3697 | 3 Copyright (C) 1997-2010 Sam Lantinga |
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4 |
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5 This library is free software; you can redistribute it and/or |
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6 modify it under the terms of the GNU Lesser General Public |
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7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
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9 |
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10 This library is distributed in the hope that it will be useful, |
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 Lesser General Public License for more details. |
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14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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18 |
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19 Sam Lantinga |
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20 slouken@libsdl.org |
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21 */ |
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22 #include "SDL_config.h" |
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23 |
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24 #ifndef SDL_POWER_DISABLED |
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25 #ifdef SDL_POWER_WINDOWS |
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26 |
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Include windows.h in a single point in the source, so we can be consistent about the definition of UNICODE and have core utility functions for Windows that all modules can share.
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27 #include "../../core/windows/SDL_windows.h" |
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28 |
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29 #include "SDL_power.h" |
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30 |
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31 SDL_bool |
3186 | 32 SDL_GetPowerInfo_Windows(SDL_PowerState * state, int *seconds, int *percent) |
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33 { |
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34 #ifdef _WIN32_WCE |
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35 SYSTEM_POWER_STATUS_EX status; |
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36 #else |
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37 SYSTEM_POWER_STATUS status; |
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38 #endif |
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39 SDL_bool need_details = SDL_FALSE; |
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40 |
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41 /* This API should exist back to Win95 and Windows CE. */ |
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42 #ifdef _WIN32_WCE |
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43 if (!GetSystemPowerStatusEx(&status, FALSE)) |
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44 #else |
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45 if (!GetSystemPowerStatus(&status)) |
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46 #endif |
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47 { |
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48 /* !!! FIXME: push GetLastError() into SDL_GetError() */ |
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49 *state = SDL_POWERSTATE_UNKNOWN; |
3186 | 50 } else if (status.BatteryFlag == 0xFF) { /* unknown state */ |
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51 *state = SDL_POWERSTATE_UNKNOWN; |
3186 | 52 } else if (status.BatteryFlag & (1 << 7)) { /* no battery */ |
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53 *state = SDL_POWERSTATE_NO_BATTERY; |
3186 | 54 } else if (status.BatteryFlag & (1 << 3)) { /* charging */ |
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55 *state = SDL_POWERSTATE_CHARGING; |
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56 need_details = SDL_TRUE; |
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57 } else if (status.ACLineStatus == 1) { |
3186 | 58 *state = SDL_POWERSTATE_CHARGED; /* on AC, not charging. */ |
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59 need_details = SDL_TRUE; |
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60 } else { |
3186 | 61 *state = SDL_POWERSTATE_ON_BATTERY; /* not on AC. */ |
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62 need_details = SDL_TRUE; |
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63 } |
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64 |
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65 *percent = -1; |
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66 *seconds = -1; |
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67 if (need_details) { |
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68 const int pct = (int) status.BatteryLifePercent; |
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69 const int secs = (int) status.BatteryLifeTime; |
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70 |
3186 | 71 if (pct != 255) { /* 255 == unknown */ |
72 *percent = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */ | |
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73 } |
3186 | 74 if (secs != 0xFFFFFFFF) { /* ((DWORD)-1) == unknown */ |
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75 *seconds = secs; |
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76 } |
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77 } |
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78 |
3186 | 79 return SDL_TRUE; /* always the definitive answer on Windows. */ |
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80 } |
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81 |
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82 #endif /* SDL_POWER_WINDOWS */ |
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83 #endif /* SDL_POWER_DISABLED */ |
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84 |
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85 /* vi: set ts=4 sw=4 expandtab: */ |